Title :
Energy gains/losses of normal and Fontan circulations in lambs under varying respiration parameters
Author :
Ketner, M. ; Lucas, C. ; Masters, J. ; Mill, M. ; Lucas, W. ; Sadoff, J. ; Kiser, A. ; Hoffman, S. ; Yoganathan, A. ; Ensley, A.
Author_Institution :
Dept. of Biomed. Eng., North Carolina Univ., Chapel Hill, NC, USA
Abstract :
The Fontan circulation or one of its many modifications is a common surgical procedure implemented in children with congenital heart defects to improve pulmonary circulation. One particular modification is the modified total cavopulmonary connection (TCP). Successful TCP operations performed in lambs show respiration has a major influence on systemic and pulmonary hemodynamics. Pressure and flow waveforms are obtained before and after the procedure and instantaneous energies are calculated. The purpose of this study is to examine these waveforms and energy gains/losses under varying respiration parameters in enter to determine an optimal surgical protocol as well as assist in the development an accurate computer simulation model
Keywords :
cardiology; haemodynamics; lung; surgery; Fontan circulation; accurate computer simulation model; children with congenital heart defects; common surgical procedure; energy gains; energy losses; flow waveforms; lambs; normal circulation; pressure waveforms; pulmonary circulation improvement; pulmonary hemodynamics; systemic hemodynamics; varying respiration parameters; Arteries; Biomedical engineering; Birth disorders; Blood flow; Computer simulation; Hemodynamics; Mathematical model; Milling machines; Protocols; Surgery;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802306
